Gyrostatic toy



April 1929- E. P. LEHMANN 1,710,219

Patented Apr. 23, 1929.

UNITED STATES PATENT OFFICE.-

EBNST JPAUL LEHMANN, OF BRANDENBURG -ON-THE-HAVEL, GERMANY, ASSIGNOR TO I THE FIRM ERNST PAUL LEHMANN, PATENTWERK, OF BRANDENBURG-ON-THE- HAVEL, GERMANY.

s GYROSTATIC TOY.

Application filed December 22, 1926, Serial No. 156,469, and in Germany January 23, 1926.

This lnvention relatesm general to gyro- .static toys or toys driven. through the fly-Wheelthat is started turn mg or .spi ning by hand. The invention 6 relates more particularly to vehicular toys of this kind as for example toy aeroplanes and a feature of it is that the motion of a agency of f;

fly-wheel or gyrost'at mounted on a vertical or approximatel vertical axis is transferred through toothe wheels to the travelling wheel axle-ofithe machine. J g

The invention is illustrated in the drawing in which Fig. 1 is a sectional elevation of a-constructional form in the shape of an aeroplane,

Fig. 2 is a top view of Fig. 1, and

Fig. 3 is a bottom view of the principal part of the machine.

The machine has a body portion 1, a plane 2 and a supporting member 3 attached to the plane and adapted to support the driving member or rotor 9. Attached to the supporting member 3 are downwardly extending lugs 6 in which is journalled the axle 5 on which are fixed the travelling wheels 4. Also fixed on the axle 5 is a toothed wheel 7 with overhanging teeth that engage with the teeth of a second toothed driving wheel 8 which is fixed on a vertical spindle 9. The bottom conical end of this spindle is journalled in a recess 10 in the sheet metal supporting member 3 and about midway between its two ends the spindle 9 is journalled in a hearing or collar 11 formed integral with the plane 2. The

spindle 9 is provided with a fly-wheel or the like. Projecting from the front end of the machine, is a shaft/13 on which-rotates a propeller 12 which is, however, not

necessary for the operation of the toy. At its tail end the machine is provided with a small additional travelling wheel 14 that facilitates the travel of the machine when the rotor or gyrostat 9 is spun round.

What I claim is z 1. A toy in the form of an aeroplane comprising a vehicular body, a horizontal axle attached to 'said body adjacent the front end thereof, travelling wheels on said axle,

a toothed wheel with lateral overhanging teeth mounted onsaid axle, a vertical driving spindle mounted in the vehicular body, a driving toothed wheel mounted on said vertical spindle and having its teeth in mesh with said first toothed wheel, and a fly-wheel mounted on the vertical driving spindle, the said driving spindle being accessible from the outside, so that it may be rotated by hand together with the flywheel.

2. A toy in the form of an aeroplane comprising a body portion, a horizontal plane connected transversely of the top and at the forward end of the bodyportion, a vertical s indle mounted centrally through said p ane, a supporting member connected to I and arranged beneath said plane for supporting the bottom end of said spindle, an axle mounted transverselyof the supporting member, atoothed wheel on said spindle, a second toothed wheel on said axle and engaged with the teeth of the first toothed wheel, supporting wheels for all of the parts mounted on said axle, a fly-wheel mounted on the upper projecting part of the spindle and arranged above said plane, substantially as and for the purposes set forth. I

In testimonywhereof I have signed my name to this specification.

ERNST PAUL LEHMANN. 

